公开(公告)号：US20210296919A1

公开(公告)日：2021-09-23

申请号：US17019660

申请日：2020-09-14

Applicant: Ningde Amperex Technology Limited

Inventor： Ao Liu ,  Meili Gong ,  Chao Gao ,  Zhanzhao Fang

IPC: H02J7/00 ,  H01M10/44 ,  H01M2/16 ,  H01M10/46 ,  C09J7/29

Abstract: A method for improving cycling performance of a battery includes, in a first stage, charging the battery with a first-stage current until a voltage of the battery reaches a first-stage voltage value and in a second stage, charging the battery with a second-stage current until the voltage of the battery reaches a second-stage voltage value. The second-stage voltage value is greater than the first-stage voltage value, and the second-stage current is less than the first-stage current.

公开(公告)号：US11843272B2

公开(公告)日：2023-12-12

申请号：US17019660

申请日：2020-09-14

Applicant: Ningde Amperex Technology Limited

Inventor： Ao Liu ,  Meili Gong ,  Chao Gao ,  Zhanzhao Fang

IPC: H02J7/00 ,  C09J7/29 ,  H01M50/46 ,  H01M50/449 ,  H01M10/44 ,  H01M10/46

CPC classification number: H02J7/007182 ,  C09J7/29 ,  H01M10/44 ,  H01M10/46 ,  H01M50/449 ,  H01M50/461 ,  C09J2203/326 ,  C09J2409/00 ,  C09J2425/00 ,  C09J2427/00 ,  C09J2433/00 ,  H01M2220/30

Abstract: A method for improving cycling performance of a battery includes, in a first stage, charging the battery with a first-stage current until a voltage of the battery reaches a first-stage voltage value and in a second stage, charging the battery with a second-stage current until the voltage of the battery reaches a second-stage voltage value. The second-stage voltage value is greater than the first-stage voltage value, and the second-stage current is less than the first-stage current.